18368+2120 HU  323

 
 
18h 36m 48.02s +21 20' 02.4" P.A. 138 sep 0.2 mag 8.73,9.35 Sp A0 dist. 704.23 pc (2297.2 l.y.)
 
 
Coord 2000
18368+2120
Discov num
HU  323
Comp
Coord arcsec 2000
18 36 48.02 +21 20 02.4
Date first
1901
Date last
2007
Obs
9
Pa first
153
Pa last
138
P.A. Now (θ)
138°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.73
Mag sec
9.35
delta mag (ΔM)
0.62
Spectral class
A0 (white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
137.6
Precise sep
0.199
Constellation
Hercules
SAO
86242
HIP
91252
Tycho2
1582-01472-1
HD
171973
BD
BD+21 3495
Distance
704.23
Distance ly
2297.2
last precise pa
137.6
last precise sep
0.199
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18368+2120 HU 323 1991 7 136 0.2 8.73 9.35 A0 183648.02+212002.4
18368+2120 HU 323 2007 9 138 0.2 8.73 9.35 A0 183648.02+212002.4

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